G - Physics – 08 – C
Patent
G - Physics
08
C
G08C 21/00 (2006.01) G06F 3/033 (2006.01) G09G 5/00 (2006.01)
Patent
CA 2273956
An acoustic touch sensing device, comprising a substrate, having a surface; and an acoustic wave transducer (11, 12), transducing a bulk wave in the substrate propagating through the substrate along an axis intersecting the surface, wherein energy of bulk wave is coupled to a wave having a converted wave mode with energy at the surface and propagating along the surface by the gratings transducers (5a, 5b, 8a, 8b).
L'invention concerne un dispositif acoustique activé par pression comprenant un substrat et une surface. Ce dispositif comprend également un transducteur (11, 12) à ondes acoustiques, permettant de transformer une onde en volume qui se propage à travers le substrat le long d'un axe croisant la surface du dispositif. Le transducteur permet de coupler l'énergie de l'onde en volume à une onde présentant un mode de propagation converti, l'énergie étant présente sur la surface et se propageant le long de cette surface grâce aux transducteurs à grille (5a, 5b, 8a, 8b).
Adler Robert
Kambara Shigeki
Kaneda Hiroshi
Kent Joel
Maxfield Bruce W.
Elo Touchsystems Inc.
Long And Cameron
LandOfFree
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